{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["food", "astronomical object", "media", "geographical phenomenon", "biology", "mythical figure", "person", "vehicle"], "input": "In 1722 , René Antoine Ferchault de Réaumur demonstrated that iron was transformed into steel through the absorption of some substance , now known to be carbon ."}
{"food": [], "astronomical object": [], "media": [], "geographical phenomenon": [], "biology": [], "mythical figure": [], "person": ["René Antoine Ferchault de Réaumur"], "vehicle": []}